Threshold Amounts for Performing Mitzvot and Transgressions

In Hebrew, a "threshold amount" or "legal threshold" is termed a "Shiur." The plural is "Shiurim."

Links

Determining ShiurimCases where we consider an item which has the majority of the shiur, to be like the entire shiur - Rubo kiKuloCases where we consider an item which is as large as the Shiur to be as though it is smaller than the ShiurIssues in Consumption